Multiple Choice
In the context of prokaryotic cell architecture, what cellular structure or process does penicillin primarily target in bacteria?
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1. Overview of Cell Biology
Prokaryotic Cell Architecture
Multiple Choice
In many bacteria, newly replicated chromosomes remain attached to the cell membrane to help ensure proper chromosome segregation during cell division. Which bacterial cell structure is most directly responsible for anchoring the chromosomes to the membrane?
A
Membrane-associated proteins that bind the origin of replication (oriC)
B
Ribosomes attached to the inner membrane
C
The outer membrane lipopolysaccharide (LPS) layer
D
Peptidoglycan cross-links in the cell wall
Verified step by step guidance1
Understand that bacterial chromosome segregation requires the chromosome to be physically anchored to a cellular structure to ensure proper distribution during cell division.
Recall that the bacterial chromosome has a specific region called the origin of replication (oriC), where replication begins and which plays a key role in chromosome positioning.
Identify that membrane-associated proteins can bind directly to the oriC region, serving as anchors that attach the chromosome to the inner cell membrane.
Recognize that ribosomes attached to the inner membrane are involved in protein synthesis, not chromosome anchoring, so they are not responsible for this function.
Note that the outer membrane lipopolysaccharide (LPS) layer and peptidoglycan cross-links in the cell wall provide structural support and protection but do not directly bind or anchor the chromosome.
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